Mercury 20 EFI FourStroke Service Manual

Fuel System
Section
3B - Troubleshooting and Diagnostics
Table of Contents
General Troubleshooting................................................... 3B-2
Testing Fuel System Inlet Vacuum
.................................... 3B-2
Fuel Pressure Test.............................................................3B-2
Wire Color Code Abbreviations..........................................3B-3
Fuel System Wiring Diagram............................................. 3B-3
Sensor Wiring Diagram......................................................3B-4
Troubleshooting and Diagnostics
90-8M0125265 eng NOVEMBER 2017 © 2018 Mercury Marine Page 3B-1
3
B

Mercury 20 EFI FourStroke Specifications

General

Brand	Mercury
Model	20 EFI FourStroke
Category	Engine
Language	English